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Xbox will add Firefight, Halo's co-op wave-defence mode, to Halo: Campaign Evolved as a free update, with more details promised at Halo Fest in December. It is the remake's first update since August. Firefight debuted in Halo 3: ODST, where players survive increasingly dangerous waves of enemies, and it appeared in every later Halo game except Halo 4. Xbox gave few specifics and said it would share additional details during Halo Fest, which runs over the weekend starting December 12. PC Gamer questioned whether the addition will change the remake's fortunes. It argued the update shows Xbox is unsure what to do with Halo, pointing to the remake's unambitious overhaul and nearly six months of silence since launch, and said Firefight looks more like something for Halo Fest than a new direction. The outlet noted that Xbox handed control of Halo to Activision during a reset that included thousands of layoffs and the loss of several studios, and that some have suggested Xbox wants Halo to be more like Call of Duty, a change PC Gamer doubted Halo could make.